What is the kVA Calculator?
kVA (apparent power) and kW (real power) differ by the power factor. Generators, UPS and transformers are rated in kVA, while appliances are rated in kW or watts. Enter any one value with voltage, phase and power factor to get the others, including the current per phase.
How to use the kVA Calculator
- Choose what you know (kVA, kW or amps).
- Select single or three phase and voltage.
- Enter the power factor (0.8 is typical for generators).
Formulas
- kW = kVA × PF
- Single-phase: kVA = V × I ÷ 1000
- Three-phase: kVA = √3 × V × I ÷ 1000
This kVA Calculator is 100% free, needs no signup and runs privately in your browser – on phone, tablet or computer.
Last updated: · By NodifyTech